No health-based violations on EPA record since 2016.
Serves about 8,070 people (2,690 connections) with surface water bought from City of Graham.
From EPA's record for TX2520007. PurityMap is independent of Fort Belknap WSC.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2025 to September 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorobutanoic acid (PFBA) | 8 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-01-21 to 2025-07-21 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-21 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-21 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-21 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-21 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-09-22 | UCMR5 Analytical Results: FORT BELKNAP WSC (TX2520007) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
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Follow this water →Fort Belknap WSC's phone number on EPA record is 940-549-6922. Its mailing address is 315 5TH ST, GRAHAM, TX 76450-2503.
According to EPA's record, Fort Belknap WSC uses surface water bought from City of Graham.
No health-based violations on EPA record since 2016. EPA also lists 1 missed or late test or report in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Fort Belknap WSC's latest lead and copper round, which ended in December 2025, was 5.06 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Fort Belknap WSC. Its phone number on EPA record is 940-549-6922. Its mailing address on EPA record is 315 5TH ST, GRAHAM, TX 76450-2503. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.